diff --git a/inputs_multiple2.txt b/inputs_multiple2.txt
new file mode 100644
index 0000000..8ee75a6
--- /dev/null
+++ b/inputs_multiple2.txt
@@ -0,0 +1,3 @@
+0.5 -2.0 25 3
+0.4 -1.5 28 5
+0.2 -0.5 30 2
diff --git a/inputs_single1.txt b/inputs_single1.txt
new file mode 100644
index 0000000..ac63bbc
--- /dev/null
+++ b/inputs_single1.txt
@@ -0,0 +1,4 @@
+0.3
+-2.5
+26
+4
\ No newline at end of file
diff --git a/version2_keyboard_input.py b/version2_keyboard_input.py
new file mode 100644
index 0000000..72f6960
--- /dev/null
+++ b/version2_keyboard_input.py
@@ -0,0 +1,6 @@
+a = float(input("Enter coefficient a: "))
+b = float(input("Enter coefficient b: "))
+c = float(input("Enter coefficient c: "))
+t = float(input("Enter time t (hour/day): "))
+T = a * t**2 + b * t + c
+print(f"Predicted temperature at t={t}: {T:.2f}°C")
diff --git a/version3_file_input_single.py b/version3_file_input_single.py
new file mode 100644
index 0000000..19d848b
--- /dev/null
+++ b/version3_file_input_single.py
@@ -0,0 +1,10 @@
+with open("inputs_single1.txt", "r") as f:
+    lines = f.readlines()
+
+a = float(lines[0])
+b = float(lines[1])
+c = float(lines[2])
+t = float(lines[3])
+
+T = a * t**2 + b * t + c
+print(f"Predicted temperature at t={t}: {T:.2f}°C")
diff --git a/version4_file_input_multiple.py b/version4_file_input_multiple.py
new file mode 100644
index 0000000..1f907ee
--- /dev/null
+++ b/version4_file_input_multiple.py
@@ -0,0 +1,5 @@
+with open("inputs_multiple2.txt", "r") as f:
+    for line in f:
+        a, b, c, t = map(float, line.strip().split())
+        T = a * t**2 + b * t + c
+        print(f"a={a}, b={b}, c={c}, t={t} -> T={T:.2f}°C")